Pub/Sub with Cloud Functions integration in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Pub/Sub topic named 'my-topic'.

GCP

gcloud pubsub topics create [1]

Drag options to blanks, or click blank then click option'

Amy-topic

Btopic-1

Ccloud-topic

Dpubsub-topic

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different topic name than 'my-topic'.

Omitting the topic name.

The command gcloud pubsub topics create my-topic creates a Pub/Sub topic named 'my-topic'.

2fill in blank

medium

Complete the code to deploy a Cloud Function named 'processMessage' triggered by the Pub/Sub topic 'my-topic'.

GCP

gcloud functions deploy processMessage --trigger-topic=[1] --runtime python312 --entry-point main

Drag options to blanks, or click blank then click option'

Atopic-1

Bmy-topic

Ccloud-topic

Dpubsub-topic

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different topic name in the trigger.

Omitting the trigger-topic flag.

The Cloud Function must be triggered by the Pub/Sub topic 'my-topic', so the trigger-topic flag should be set to 'my-topic'.

3fill in blank

hard

Fix the error in the Cloud Function code to correctly decode the Pub/Sub message data.

GCP

def main(event, context):
    import base64
    message = base64.b64decode(event['data']).decode('utf-8')
    print('Received message:', [1])

Drag options to blanks, or click blank then click option'

Aevent['data']

Bmessage

Ccontext

Devent

Attempts:

3 left

💡 Hint

Common Mistakes

Printing the raw event data instead of the decoded message.

Using the context object instead of the message.

The decoded message is stored in the variable message, so printing message shows the decoded content.

4fill in blank

hard

Fill both blanks to create a subscription named 'my-subscription' for the topic 'my-topic'.

GCP

gcloud pubsub subscriptions create [1] --topic=[2]

Drag options to blanks, or click blank then click option'

Amy-subscription

Bmy-topic

Csubscription-1

Dtopic-1

Attempts:

3 left

💡 Hint

Common Mistakes

Using mismatched subscription or topic names.

Omitting either the subscription name or topic flag.

The subscription name is 'my-subscription' and it must be created for the topic 'my-topic'.

5fill in blank

hard

Fill all three blanks to publish a message 'Hello, Cloud!' to the Pub/Sub topic 'my-topic' using gcloud.

GCP

gcloud pubsub topics publish [1] --message '[2]' --attribute [3]=greeting

Drag options to blanks, or click blank then click option'

Amy-topic

BHello, Cloud!

Ctype

Dmy-subscription

Attempts:

3 left

💡 Hint

Common Mistakes

Using the subscription name instead of the topic name.

Incorrect message text or attribute key.

The message is published to 'my-topic' with the message text 'Hello, Cloud!' and an attribute key 'type' set to 'greeting'.